BTDB.KVDBLayer.OnDiskFileCollection.File.Reader.ReadBlock C# (CSharp) Method

                public override void ReadBlock(byte[] data, int offset, int length)
                {
                    if (length < Buf.Length)
                    {
                        base.ReadBlock(data, offset, length);
                        return;
                    }
                    var l = End - Pos;
                    Array.Copy(Buf, Pos, data, offset, l);
                    offset += l;
                    length -= l;
                    Pos += l;
                    _owner._stream.Position = (long)_ofs;
                    var read = _owner._stream.Read(data, offset, length);
                    if (read != length)
                    {
                        throw new EndOfStreamException();
                    }
                    _ofs += (ulong)read;
                }